as mitt romney in virginia looks to build on his momentum. overnight here, the key battleground of virginia, mitt romney on a different stage. but it was that debate stage 24 hours earlier, still on his mind. >> last night, i thought was a great opportunity for the american people to see two very different visions for the country. >> reporter: deafening cheers and a swelling crowd of a debate performance that's rallied republicans. paul ryan, taking away from his own debate prep. >> last night, america got to see the man i know. a leader. >> reporter: the president, meanwhile, in the battleground leaning his way, wisconsin. speaking before a crowd of more than 30,000, his biggest crowd of the campaign yet. more energized than during the debate. >> when i got on the stage, i met this very spirited fellow who claimed to be mitt romney. but i know it couldn't have been mitt romney because the real mitt romney's been running around the country for the last year, promising $5 trillion in tax cuts that favor the wealthy. >> reporter: many supporter